Cards (4)

  • Facts:
    • produces fewest emissions
    • formed from decomposing plants/animals over millions of years
  • Found:
    • large cracks/spaces in rock layers
    • tiny pores in sedimentary rock
    • Russia, Iran and Qatar have largest reserves
    • extracted via fracking
  • Advantages:
    • easily transported via tanks/pipes
    • extraction risks are lower
    • fewer emissions
    • lower costs
  • Disadvantages:
    • fracking contaminates groundwater supplies and increases tectonic activity (earthquakes)
    • produces greenhouse gases
    • storing gas is expensive (larger volume)
    • main reserves are in conflicted/politically unstable countries